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Styrenic thermoplastic elastomer and preparation method thereof

A technology of thermoplastic elastomer and thermoplastic elasticity, which is applied in the field of thermoplastic elastomer and its preparation, can solve the problems of harming the human body and the environment, and achieve the effects of avoiding harm, improving thermal oxygen aging performance, and not obvious yellowing

Active Publication Date: 2013-01-23
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of BHT and TNPP used in the prior art is relatively high, which is harmful to the human body and the environment. Therefore, when preparing a thermoplastic elastomer, choosing an environmentally friendly antioxidant system can not only reduce the pressure of environmental pollution, but also improve product competition. Force, promote export, improve product quality

Method used

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  • Styrenic thermoplastic elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Get 2533g styrene-based thermoplastic elastomer glue, add 1000ppm primary antioxidant KD-A1080, 4500ppm secondary antioxidant 168 and 200g white naphthenic oil to it successively, use high-shear emulsifier to stir for 15 minutes, use water Steam stripping removes the organic solvent in the glue to obtain a rubber block, which is rolled on a double-roller rubber mixer to remove moisture, and the sample preparation method is tested according to the relevant mechanical properties, and mixed at a certain temperature. Use a flat vulcanizer to mold a 2mm thick sample at 165±0.5°C, place it in a constant temperature and humidity box for 24 hours, then cut it into a dumbbell-shaped rubber test sample, one part is used for mechanical performance testing, and the other part The specimens were placed in a thermo-oxidative aging test chamber for thermo-oxidative aging at 70±1°C, and samples were taken regularly to observe the changes of the specimens. The results are shown in Table ...

Embodiment 2

[0031] Take 2533g styrene thermoplastic elastomer glue, add 3000ppm primary antioxidant KD-A1080, 4450ppm secondary antioxidant and 200g white naphthenic oil to it successively. After using a high-shear emulsifier to stir for 15 minutes, steam stripping was used to remove the organic solvent in the glue to obtain a rubber block, which was rolled on a double-roller rubber mixer to remove moisture, and according to the relevant mechanics Performance test sample preparation method, kneading at a certain temperature, molded into a 2mm thick sample with a flat vulcanizer at 165±0.5°C, placed in a constant temperature and humidity box for 24 hours, and cut it into a dumbbell-shaped rubber test sample One part of the sample is used for mechanical performance testing, and the other part of the sample is placed in a thermo-oxidative aging test box for thermo-oxidative aging at 70±1°C. Regular sampling is performed to observe the changes of the sample. The results are shown in Table 1. ...

Embodiment 3

[0033]Take 2533g styrene thermoplastic elastomer glue, add 5000ppm primary antioxidant KD-A1080, 4450ppm secondary antioxidant and 200g white naphthenic oil to it successively. After using a high-shear emulsifier to stir for 15 minutes, steam stripping was used to remove the organic solvent in the glue to obtain a rubber block, which was rolled on a double-roller rubber mixer to remove moisture, and according to the relevant mechanics Performance test sample preparation method, kneading at a certain temperature, molded into a 2mm thick sample with a flat vulcanizer at 165±0.5°C, placed in a constant temperature and humidity box for 24 hours, and cut it into a dumbbell-shaped rubber test sample One part of the sample is used for mechanical performance testing, and the other part of the sample is placed in a thermo-oxidative aging test box for thermo-oxidative aging at 70±1°C. Regular sampling is performed to observe the changes of the sample. The results are shown in Table 1.

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Abstract

The invention discloses a styrenic thermoplastic elastomer, which is mainly prepared by using a styrenic thermoplastic elastomerglue solution, extending oil and antioxygen as raw materials and by mixing and refining. The elastomer consists of 2,000 to 3,000 weight parts of styrenic thermoplastic elastomerglue solution, 150 to 250 weight parts of extending oil and 1,000 to 5,000ppm of antioxygen. The antioxygen at least comprises compound hindered phenol antioxygen. The invention also discloses the preparation method of the styrenic thermoplastic elastomer, which is very antioxidant and environment-friendly.

Description

technical field [0001] The invention relates to a thermoplastic elastomer and a preparation method thereof, in particular to a styrene thermoplastic elastomer and a preparation method thereof. Background technique [0002] Styrenic thermoplastic elastomers have good low-temperature elasticity and easy processability, and are widely used in shoemaking, asphalt modification, polymer blending modification, adhesives and other fields. The unsaturated C=C double bonds in its molecular chain are prone to aging due to factors such as light, heat, and oxygen during processing and application, which affects its performance. Manufacturers often prevent product aging by adding anti-aging agents such as light stabilizers, harmful metal inhibitors, free radical inhibitors, peroxide decomposers, and antiozonants. [0003] At present, manufacturers of styrene thermoplastic elastomers at home and abroad mainly use 2,6-di-tert-butyl-4-methylphenol (BHT) and antioxidant TNPP, and mostly use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08K5/13C08K5/524C08K5/01
Inventor 王大庆蔡伟许晋国莫益燕林茂梁伟强
Owner CHINA PETROLEUM & CHEM CORP
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